Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
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vallaris_glabra_l._kuntze [2015/07/16 20:47] andreas angelegt |
vallaris_glabra_l._kuntze [2017/03/13 15:01] (aktuell) andreas |
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Woody climber, native to Java; leaves broadly elliptic; inflorescences long-stalked, | Woody climber, native to Java; leaves broadly elliptic; inflorescences long-stalked, | ||
cup-like white flowers, 1.0–1.5 cm in diameter. "The plant | cup-like white flowers, 1.0–1.5 cm in diameter. "The plant | ||
- | is well known in Thailand and Malaysia because its flowers have a scent of leaves of pandan (Pandanus amaryllifolius) or newly cooked fragrant rice. The aromatic compound is 2-acetyl-1-pyrroline, | + | is well known in Thailand and Malaysia because its flowers have a scent of leaves of pandan (Pandanus amaryllifolius) or newly cooked fragrant rice. The aromatic compound is 2-acetyl-1-pyrroline, |
+ | [Botany, uses, phytochemistry and pharmacology of selected Apocynaceae species: A review. Pharmacogn Commun. WONG, Siu Kuin, et al., 2013, Vol.3, 2-11] | ||
- | "The aroma impact compound, 2-acetyl-1-pyrroline (2AP), has been identified for the first time in headspace of fresh bread flowers (//Vallaris glabra// Ktze) in which volatile components were extracted by solid-phase microextraction (SPME) at room temperature prior to analysis by gas chromatography−mass spectrometry. A total of 50 volatiles were detected. Among these, 23 volatiles were identified, predominantly in a group of terpenes. More volatiles were found in the extract of fresh bread flowers obtained by continuous steam distillation and solvent extraction (SDS). Of the 40 volatiles identified, the additional components were mainly straight-chain saturated hydrocarbons. 2AP was found in the extracts obtained by both SPME (0.37%) and SDS (2.71% relative proportion). Quantitative analyses of 2AP in bread flowers and other plant materials were performed by solvent extraction employing acidic solutions and capillary GC with flame ionization detection. The highest concentration of 2AP was found in dried flowers of V. glabra at 26.1 mg/kg. By comparison with other plant sources, fresh leaves of Pandanus amaryllifolius Roxb contain 2AP at 10.3 mg/kg and Thai fragrant rice, Khao Dawk Mali 105, at 3.0 mg/ | + | {{: |
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+ | "The aroma impact compound, 2-acetyl-1-pyrroline (2AP), has been identified for the first time in headspace of fresh bread flowers (//Vallaris glabra// Ktze) in which volatile components were extracted by solid-phase microextraction (SPME) at room temperature prior to analysis by gas chromatography−mass spectrometry. A total of 50 volatiles were detected. Among these, 23 volatiles were identified, predominantly in a group of terpenes. More volatiles were found in the extract of fresh bread flowers obtained by continuous steam distillation and solvent extraction (SDS). Of the 40 volatiles identified, the additional components were mainly straight-chain saturated hydrocarbons. 2AP was found in the extracts obtained by both SPME (0.37%) and SDS (2.71% relative proportion). Quantitative analyses of 2AP in bread flowers and other plant materials were performed by solvent extraction employing acidic solutions and capillary GC with flame ionization detection. The highest concentration of 2AP was found in dried flowers of V. glabra at 26.1 mg/kg. By comparison with other plant sources, fresh leaves of [[pandanus_amaryllifolius_roxb|Pandanus amaryllifolius]] Roxb contain 2AP at 10.3 mg/kg and Thai fragrant rice, Khao Dawk Mali 105, at 3.0 mg/ | ||
+ | [Identification and Quantitation of the Rice Aroma Compound, 2-Acetyl-1-pyrroline, | ||
"From the leaves of V. glabra, cardiac glycosides, phenolic acids, fatty acids and triterpenes have been isolated... V. glabra | "From the leaves of V. glabra, cardiac glycosides, phenolic acids, fatty acids and triterpenes have been isolated... V. glabra | ||
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[[http:// | [[http:// | ||
- | {{https:// | + | {{Vallaris_glabra.jpg?800|Flowers of Vallaris glabra (Apocynaceae), |
+ | Flowers of Vallaris glabra (Apocynaceae), | ||
+ | [[https:// |